Binance suffered a $5.5 billion theft. The private key and signature were genuine; nothing stopped it. The reasons for each theft are different, but the money always leaves faster than anyone can see it. A call to all wallets/cross-chain bridges: prioritize verification, not speed. Every cross-chain transaction should have a checkpoint—an additional signer, a delay, and an independent verification of the source chain. Without this checkpoint, you are not a bridge; you are the next key to be stolen.